Question

solve for u. -31 = 3u + 9 - 8u. simplify your answer as much as possible. u =

Explanation:

Step1: Combine like - terms

Combine the terms with the variable $u$ on the right - hand side of the equation. $3u-8u=-5u$, so the equation becomes $-31 = - 5u+9$.

Step2: Isolate the term with the variable

Subtract 9 from both sides of the equation. $-31 - 9=-5u+9 - 9$. This simplifies to $-40=-5u$.

Step3: Solve for $u$

Divide both sides of the equation by - 5. $\frac{-40}{-5}=\frac{-5u}{-5}$. So, $u = 8$.

Answer:

$u = 8$